<PRE><B>Question 174756</B>
I need help graphing the ellipse and finding the foci of the following equation: 5x^2+y^2=25
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Divide thru by 25 to get: x^2/5 + y^2/25 = 1
a = sqrt(25)=5 ; b = sqrt(5)
Therefore c = sqrt(a^2+b^2) = sqrt(25+5) = sqrt(30)
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Center is at (0,0)
Major-axis vertices are: (0,5) and (0,-5)
Minor-axis vertices are: (sqrt(5),0) and (-sqrt(5),0)
Foci:(0,sqrt(30)) and (0,-sqrt(30))
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Cheers,
Stan H. </PRE>